For RTL8211B or later PHYs, enable crossover detection and
auto-correction. This change makes re(4) establish a link with
a system using non-crossover UTP cable.

Tested by:	Michael BlackHeart < amdmiek <> gmail dot com >


git-svn-id: svn+ssh://svn.freebsd.org/base/head@248542 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f